Tetrahedron Letters

Une nouvelle reaction de transposition: acces facile a des thiopyranne thiones a partir de (dimethylamino-2 vinyl)-5 alkylthio-3 dithiole-1, 2 yliums

M Barreau, C Cotrel

Index: Barreau, M.; Cotrel, C. Tetrahedron Letters, 1981 , vol. 22, # 45 p. 4507 - 4510

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Citation Number: 3

Abstract

Abstract Reduction by potassium borohydride of 5-(2-dimethylaminovinyl) 3-alkylthio 1, 2- dithiole yliums yields, 4-alkylthio 2H-thiopyranne 2-thiones, or 2-alkylthio 4H-thiopyranne 4- thiones (depending on the alkyl group); these react with secondary amines to yield 4-amino 2H-thiopyranne 2-thiones.